Anders & Uwe,
I have had the jumper installed all the time. The regulators give 1.8
& 3.3v always.
I think this is a problem with the board.
Can anyone confirm the voltage present on Tx.
Cheers
Nick
--- In lpc2000@yahoogroups.com, "kjellberg_anders" <akj@...> wrote:
>
>
> Nick,
>
> I forgot. There should be a jumper J1 on your board. It shorts the
> diode! I have not checked the documentation (there´s no jumper on
my
> board) but this might be a clue. Check my previous post if you
> haven´t already.
>
> Anders
>
>
> --- In lpc2000@yahoogroups.com, "kjellberg_anders" <akj@> wrote:
> >
> > Nick,
> >
> > I did not expect anything like this either...
> > I had a look at the P2106 schematics and apparently it is similar
> to
> > the mt board in this respect. The same 5V zenerdiode followed by
a
> > 3.3V regulator. This regulator feeds the RS232 chip, no RS232 -no
> > bootloader. Both the mt and the P schematics actually say 9VAC,
> but
> > the documentation says 6VAC 9VDC.
> >
> > Good luck!
> > Anders
> >
> >
> >
> > --- In lpc2000@yahoogroups.com, "nma550n" <nma550n@> wrote:
> > >
> > > Anders,
> > >
> > > I actually have the P2106 board and not the 2106mt board. I
> > > originally did not think the problem with the boot loader was
> > > anything hardware.
> > >
> > > I'm not sure if this will sort out the problem with my board,
as
> > > there is no need to have the voltage as high as 12v (as far as
i
> > can
> > > see).
> > > I will still give this a go though.
> > >
> > > You say at 9 v your Tx line is 0v. What is it at 12v?
> > > Just trying to tie things together here. At work at the moment
> and
> > > can't test things till I get home.
> > >
> > > Thanks for all your help.
> > >
> > > Nick
> > >
> > > --- In lpc2000@yahoogroups.com, "kjellberg_anders" <akj@> wrote:
> > > >
> > > > Nick,
> > > >
> > > > I get 0V on the TX pin at 9V.
> > > > It is clear from the schematic that the board won't work at
> 9V.
> > I
> > > > was also a bit afraid of upping the voltage as the current
> > > increased
> > > > a lot. The trick is to start at 12V since the regulators draw
> > very
> > > > much current when fed below nominal voltage. After the
> > rectifying
> > > > bridge there is 7805(and the schematic says 12V there!).
There
> > is
> > > > also a 1N4733 5V zener-diode. Thus, att 9V there's only 4V
> left
> > for
> > > > the LM1117 3.3V regulator which has a minimum voltage drop of
> > about
> > > > 1.0-1.2V minimum (4.3-4.5V in). The core may get the correct
> > > voltage
> > > > but the peripherals won't.
> > > >
> > > > Cheers
> > > > /Anders
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > --- In lpc2000@yahoogroups.com, "nma550n" <nma550n@> wrote:
> > > > >
> > > > > Anders,
> > > > >
> > > > > Great to hear you got your board working! I have not tried
> > upping
> > > > the
> > > > > voltage as yet, will give it a try later. The only thing
> that
> > > > stopped
> > > > > me thinking that the voltage would make any differenct was
> > that
> > > > the
> > > > > board was getting 1.8v for the core and 3.3v for the
> > peripherals.
> > > > >
> > > > > Are you saying it requires 12v for RS232?
> > > > >
> > > > > Also, what is voltage on your Tx pin on the LPC2106 (at
> > default)?
> > > > > Regards,
> > > > >
> > > > > Nick
> > > > >
> > > > >
> > > > > --- In lpc2000@yahoogroups.com, "kjellberg_anders" <akj@>
> > wrote:
> > > > > >
> > > > > >
> > > > > > Nick,
> > > > > >
> > > > > > It actually works now! Olimex states 9VDC/6VAC for
> powering
> > the
> > > > > > board, but when I had a look at the closer look at the
> > > schematic
> > > > it
> > > > > > became obvious that it should be 12V... Let me know if
> this
> > > > solves
> > > > > > your problem as well. Otherwise I could post my LPC
> utility
> > > > > settings.
> > > > > >
> > > > > > regards
> > > > > > /Anders
> > > > > >
> > > > > >
> > > > > >
> > > > > >
> > > > > > --- In lpc2000@yahoogroups.com, "nma550n" <nma550n@>
wrote:
> > > > > > >
> > > > > > > Anders,
> > > > > > >
> > > > > > > You had any luck yet?
> > > > > > >
> > > > > > > Cheers,
> > > > > > >
> > > > > > > Nick
> > > > > > >
> > > > > > > --- In lpc2000@yahoogroups.com, "kjellberg_anders"
> <akj@>
> > > > wrote:
> > > > > > > >
> > > > > > > >
> > > > > > > > Nick,
> > > > > > > >
> > > > > > > > Thanks for letting me know about your LPC 2106
> problems.
> > > > Since
> > > > > > I'm
> > > > > > > > working from home today I do not have any other
cables
> > but
> > > > I'll
> > > > > > get
> > > > > > > > back to you as soon as I have tried a different one.
> As
> > I
> > > > wrote
> > > > > > > > earlier, I have tested different baudrates and made
> sure
> > > > that
> > > > > > the
> > > > > > > > comport was correctly setup. I'll check that with a
> > scope
> > > > > > tomorrow.
> > > > > > > >
> > > > > > > > Best regards
> > > > > > > > /Anders
> > > > > > > >
> > > > > > > >
> > > > > > > > -- In lpc2000@yahoogroups.com, "nma550n" <nma550n@>
> > wrote:
> > > > > > > > >
> > > > > > > > > Anders,
> > > > > > > > >
> > > > > > > > > I am also having problems with the Philips LPC2000
> > flash
> > > > > > utility
> > > > > > > > > (olimex LPC2106), and was just about to post a
> message
> > on
> > > > > this
> > > > > > > > board
> > > > > > > > > to see if the problem lies with my development
board.
> > > > > > > > > I am just trying to upload the simple blink LED hex
> > file
> > > > to
> > > > > > > flash,
> > > > > > > > > and it just comes up with cannot communicate. I too
> > have
> > > > > tried
> > > > > > > > many
> > > > > > > > > different com ports, jumper settings and different
> > reset
> > > > > > > > conditions,
> > > > > > > > > to no avail. This is the first time I have tried to
> > use
> > > > this
> > > > > > > > board,
> > > > > > > > > so i have no idea if the thing works.
> > > > > > > > >
> > > > > > > > > I am almost certain the problem does not lie with
> the
> > > > Philips
> > > > > > > > LPC2000
> > > > > > > > > flash utility as I have scoped out the Rx signal
> (3.3v
> > > > low,
> > > > > 0v
> > > > > > > > high)
> > > > > > > > > on the board and found it to receive data.
> > > > > > > > > However, my Tx pin on the chip is always at ground
> and
> > > > does
> > > > > > > > nothing.
> > > > > > > > >
> > > > > > > > > Does anyone know if Tx should be held at 0v???
> > > > > > > > >
> > > > > > > > > Not sure if this will help you Anders, but just to
> let
> > > you
> > > > > > know
> > > > > > > > your
> > > > > > > > > not alone.
> > > > > > > > >
> > > > > > > > > cheers,
> > > > > > > > >
> > > > > > > > > Nick
> > > > > > > > >
> > > > > > > > > > --- In lpc2000@yahoogroups.com, "Anders
Kjellberg"
> > > > <akj@>
> > > > > > wrote:
> > > > > > > > > > >
> > > > > > > > > > > Hi,
> > > > > > > > > > > I'm trying to establish connection with Philips
> > Flash
> > > > > > Utility
> > > > > > > > and
> > > > > > > > > > an Olimex 2106 mt board without success. TheBSL
> > jumper
> > > > is
> > > > > > > > shorted
> > > > > > > > > > and the frequency set at 14745kHz (14.7456MHz).
> > > > Different
> > > > > > > > baudrates
> > > > > > > > > > have been tried without success. I am not sure
> about
> > > the
> > > > > > > DTR/RTS
> > > > > > > > > > settings however. Also I may be using the wrong
> > RS232
> > > > > cable.
> > > > > > > > Null
> > > > > > > > > > modem or not? I'll have to check that. I intend
to
Show quoted textHide quoted text
> > use
> > > > the
> > > > > > > > > > bootloader and ICCARM. Any ideas that may help?
> > > > > > > > > > >
> > > > > > > > > > > Thanks in advance!
> > > > > > > > > > > /Anders
> > > > > > > > > > >
> > > > > > > > > > > [Non-text portions of this message have been
> > removed]
> > > > > > > > > > >
> > > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > >
> > > > >
> > > >
> > >
> >
>